This paper provides a comparative review of data encryption methods in the United States and Europe, highlighting the differences in implementation, legal frameworks, and priorities. In the United States, data encryption is governed by federal laws and industry standards, with the National Institute of Standards and Technology (NIST) playing a central role in recommending cryptographic standards. The Department of Commerce oversees export controls on encryption technology, balancing national security needs with individual privacy rights. The tension between law enforcement's access to encrypted data and privacy rights has sparked debates and legal battles. In Europe, the General Data Protection Regulation (GDPR) is a cornerstone in safeguarding individual privacy rights, mandating the use of encryption to protect personal data. European countries emphasize end-to-end encryption in communication services to ensure confidentiality. The GDPR imposes stringent penalties for non-compliance, reflecting Europe's commitment to protecting personal data. Technological implementation in data encryption is characterized by the widespread use of the Advanced Encryption Standard (AES) and global alignment with encryption standards. However, differences in key management practices, such as key generation, distribution, and storage, vary across regions. The effectiveness of encryption methods depends on robust key management practices. The regulatory landscape in the United States is complex, with federal and state laws intersecting, while Europe's GDPR provides a harmonized framework. The GDPR's extraterritorial reach and stringent penalties for non-compliance have a significant impact on organizations operating in multiple European countries. The paper concludes that understanding the differences in data encryption methods between the USA and Europe is crucial for multinational organizations and individuals. A nuanced and adaptive approach is necessary to navigate the complex regulatory environments and ensure compliance with evolving standards. Collaboration between regions is essential to develop international standards and agreements on data protection, fostering innovation while preserving individual privacy.This paper provides a comparative review of data encryption methods in the United States and Europe, highlighting the differences in implementation, legal frameworks, and priorities. In the United States, data encryption is governed by federal laws and industry standards, with the National Institute of Standards and Technology (NIST) playing a central role in recommending cryptographic standards. The Department of Commerce oversees export controls on encryption technology, balancing national security needs with individual privacy rights. The tension between law enforcement's access to encrypted data and privacy rights has sparked debates and legal battles. In Europe, the General Data Protection Regulation (GDPR) is a cornerstone in safeguarding individual privacy rights, mandating the use of encryption to protect personal data. European countries emphasize end-to-end encryption in communication services to ensure confidentiality. The GDPR imposes stringent penalties for non-compliance, reflecting Europe's commitment to protecting personal data. Technological implementation in data encryption is characterized by the widespread use of the Advanced Encryption Standard (AES) and global alignment with encryption standards. However, differences in key management practices, such as key generation, distribution, and storage, vary across regions. The effectiveness of encryption methods depends on robust key management practices. The regulatory landscape in the United States is complex, with federal and state laws intersecting, while Europe's GDPR provides a harmonized framework. The GDPR's extraterritorial reach and stringent penalties for non-compliance have a significant impact on organizations operating in multiple European countries. The paper concludes that understanding the differences in data encryption methods between the USA and Europe is crucial for multinational organizations and individuals. A nuanced and adaptive approach is necessary to navigate the complex regulatory environments and ensure compliance with evolving standards. Collaboration between regions is essential to develop international standards and agreements on data protection, fostering innovation while preserving individual privacy.